{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43309",
    "entityType": "User",
    "nonce": "0xa480cd6bf5442075fd5b544c0ea40ee47e98bba697224a0a01a84b0f54057327",
    "signature": "0xcb5792ce196edaa6e6e0701055f7b87991e72d9ae621f85772a8563641ff15f05b258ac1681cd262a00365e7dae73cead0276b95b88c45b347a2ad0afe52ad1a1c",
    "signer": "0x90d627796C9E2071AAd9F8C20f6dCE95587F6d13",
    "userId": "560619378"
  }
}